JP3679286B2 - Backhoe temperature control device layout - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a temperature adjusting device arrangement structure for a backhoe.
[0002]
[Prior art]
The backhoe temperature control device, for example, the heat device, is designed to blow air to the driver side through the fan wind through the heat exchanger that passes hot water from the radiator, so that hot air can be effectively delivered to the driver. In the vicinity of the driver's seat.
For example, in Japanese Patent Application Laid-Open No. 9-273177, heating means is arranged on the right outer side of a support base that supports a driver's seat, the heating means is a substantially rectangular parallelepiped, and the longitudinal side thereof is front-rear facing. In addition, the maximum area surface is directed left and right.
[0003]
By the way, small and medium-sized backhoes are required to make the structure on the swivel as compact as possible to facilitate turning and reduce costs, and the distance from the driver's seat to the front control device. The distance from the driver's seat to the rear of the swivel must be kept as short as possible, so that the driver's seat will overlap with the center of rotation in the front-rear direction, The backrest portion is positioned so as to overlap with the engine or the radiator at the rear of the swivel base.
[0004]
[Problems to be solved by the invention]
However, when the heating means having a substantially rectangular parallelepiped shape is arranged with its longitudinal side facing forward and backward as in the prior art, the arrangement of the engine or the like is restricted by the arrangement of the heating means, that is, the front side of the engine room. It is difficult to bring the front wall covering the vehicle closer to the turning center, making it difficult to place the engine in the front position as much as possible, and as a result, it is difficult to shorten the distance from the driver's seat to the rear of the turntable. It has become.
It is an object of the present invention to provide a backhoe temperature control device arrangement structure that can solve such problems of the prior art.
[0005]
The present invention reduces the occupied area in the front-rear direction of the temperature adjustment device as much as possible by arranging the temperature adjustment device below the driver's seat with its longitudinal side facing substantially left and right. It is an object of the present invention to provide a backhoe temperature control device arrangement structure that can shorten the distance to the backhaul.
[0006]
[Means for Solving the Problems]
The first specific means for solving the problem in the present invention is that the excavator 3 is disposed at the front of the swivel base 2 and the engine 4 is disposed at the rear, respectively. The driver's seat 6 and the temperature adjusting device 7 below the turning center S are arranged in the vicinity of the turning center S in the left and right direction, and the longitudinal side of the temperature adjusting device 7 is directed substantially to the left and right.
As a result, the temperature adjustment device 7 has a small front-rear area, and the engine 4 and the like can be arranged as far as possible to shorten the distance from the driver's seat 6 to the rear of the swivel base 2. .
[0007]
The second specific means for solving the problems in the present invention is that the excavator 3 is disposed at the front of the swivel 2 and the engine 4 is disposed at the rear, and the swivel center S in the front-rear direction is placed on the swivel 2. The support base 8 is arranged in the vicinity of the turning center S in the left-right direction, the driver's seat 6 is arranged on the support base 8, and the temperature adjusting device 7 is arranged below the inside thereof. That is, the longitudinal side of the device 7 is directed substantially to the left and right.
As a result, the temperature adjustment device 7 can be accommodated in the support base 8 of the driver's seat 6 and the engine 4 and the like can be arranged as far as possible to shorten the distance from the driver's seat 6 to the rear of the swivel base 2. become.
[0008]
The third specific means for solving the problem in the present invention is that, in addition to the second specific means, the temperature adjusting device 7 is a substantially rectangular parallelepiped, and its maximum area surface is vertically oriented. The tool holder 9 is provided above the temperature adjusting device 7 inside the support base 8.
As a result, the temperature adjusting device 7 is arranged low, and the inner upper portion of the support base 8 can be effectively used as the tool insertion portion 9.
The fourth specific means for solving the problems in the present invention is that the support base 8 is formed in a box shape in addition to the second or third specific means, and the opening / closing lid 11 having a ventilation hole 10 on the front surface thereof. And a wind direction change body that turns the air blown from the temperature adjusting device 7 forward and discharges it from the vent hole 10 of the opening / closing lid 11 is provided.
[0009]
Thus, even if the wind outlet of the temperature adjusting device 7 is not forward, the air can be turned forward and discharged from the vent hole 10 of the opening / closing lid 11.
The fifth specific means for solving the problems in the present invention includes at least one of the left and right control devices 12 and 13 on the left and right side portions of the support base 8 in addition to any one of the second to fourth specific means. It is to support.
As a result, the left and right control devices 12 and 13 can be firmly supported in the vicinity of the driver's seat 6.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
3, 6, and 7, the backhoe 1 shown as a small rear swivel type has a swivel base 2 rotatably mounted on a body 18 having a pair of left and right crawler travel devices 17, and a dozer 19 is mounted on the front of the body 18. The excavator 3 is installed in the front part of the swivel base 2, the engine 4, the weight 5, etc. are arranged in the rear part thereof, the driver's seat 6 is placed in the central part, and the driver's seat 6 is covered. A cabin device 20 is provided.
[0011]
The excavator 3 supports a swing bracket 22 on a front support portion 2A of the swivel base 2 via a vertical axis and swings with a swing cylinder 21. A boom 23 and a boom are mounted on the swing bracket 22. The cylinder 24 is pivotally supported, the arm 25 is pivotally supported at the tip of the boom 23, and the arm cylinder 26 is allowed to swing back and forth. The bucket 28 that is scooped and dumped by the bucket cylinder 27 is pivotally supported at the tip of the arm 25. doing.
On the swivel base 2, an engine 4, a radiator 32, a hydraulic pump, and the like are disposed at the rear, covered with a left cover 33 and a bonnet 34, and a fuel tank, a hydraulic oil tank, a battery, a control valve, and the like are disposed on the right side. It is covered with a tank cover 35, and a weight 5 is attached to the rearmost part of the swivel base 2.
[0012]
The cabin device 20 is provided with a ceiling member 38 on a fixed cabin frame 37 on the swivel base 2 and is provided with a door 39 that can be opened and closed around a vertical axis at the left front part, a front glass 40 at the front part, and a right side glass at the right part. A left side glass 41 is provided at the left rear portion, a rear glass 42 is provided at the rear portion, a ceiling window 43 is provided on the ceiling member 38, and an air conditioner device is provided therein.
The cabin device 20 surrounds the upper space on the front and left sides from the center of the upper surface of the swivel base 2 defined by the bonnet 34 and the tank cover 35, and minimizes and minimizes the driver's living space for the driver sitting in the driver's seat 6. The distance from the turning center S of the swivel base 2 to the engine 4 and the radiator 32 and the like is shortened in the front-rear direction while mounting such a cabin device 20, and thereby from the turning center S of the swivel base 2. Since the distance to the rear weight 5 and the hood 34 is shortened, and the distance to the hood 34 is shortened, a recess 44 is formed in the rear lower part of the cabin device 20 so that the hood 34 can be opened upward. Yes.
[0013]
1 to 5, in the cabin device 20, a floor seat is provided on the upper surface of the swivel base 2, a control stick 45 and control pedals are disposed at the front, and a left control device on the left side of the driver seat 6. 12, the right steering device 13 is disposed on the right side, and the driver's seat 6 is mounted on a support base 8 fixed to the swivel base 2 with bolts.
The support base 8 has a pair of left and right side plates 52 bolted to a base plate 51 that is bolt-fixed to the swivel base 2, and has a substantially U-shaped cross section that forms a tool slot 9 in the middle in the vertical direction of the left and right side plates 52. A plate-shaped receiving member 53 is bolted, and a connecting plate 54 is bolted from the upper part of the left and right side plates 52 to the rear part of the receiving member 53.
[0014]
A large space is formed below the receiving member 53, and a temperature adjusting device 7 such as a heater device is disposed. The temperature adjustment device 7 is suspended from above by a first suspension 55 and a pair of second suspensions 56 attached to the lower surface of the receiving member 53, and the lower surface of the temperature adjustment device 7 does not contact the base plate 51. It is in a state.
The first and second suspension members 55 and 56 are formed by bending a sheet metal into a Z shape, and the first suspension member 55 and the second suspension member 56 are arranged with a bending direction different by 90 degrees.
[0015]
With such a mounting structure, the temperature adjusting device 7 is designed so that vibrations from the swivel base 2 are not easily propagated and the disconnection of the piping is reduced.
The temperature adjustment device 7 has a heat exchanger, a fan, a fan drive motor, and the like inside, is a substantially rectangular parallelepiped similar to the front rear circular shape, the maximum area surface is directed in the vertical direction, and the long side is in the horizontal direction. Accordingly, the temperature adjusting device 7 is long in the left-right direction, short in the front-rear direction, and shortest in the vertical direction.
The temperature adjusting device 7 has an air introduction port on the lower surface side, air can be introduced from a hole (not shown) formed in the lower base plate 51 or the surroundings, and a discharge port at the end on the long side. Then, hot air (temperature adjusting air) is discharged to the longitudinal side (left and right direction). Further, a pipe connecting portion 57 is also provided at the longitudinal end portion, and two radiators 32 and two hoses (tubes) 58 for supplying and returning hot water are connected.
[0016]
A wind deflector 14 is attached to the longitudinal end of the temperature adjusting device 7 so as to cover the discharge port. The wind deflector 14 has an inclined surface 14A and a front opening 14B intersecting with the left-right direction, and turns the wind discharged from the discharge port in the longitudinal direction (left direction) of the temperature adjusting device 7 forward. Can do. The wind deflector 14 may be attached to the side plate 3.
A pair of left and right pivots 60 formed of L-shaped bars are provided on the lower part of the left right plate 52 (or the upper surface of the base plate 51). It is fitted and pivotally supported.
[0017]
The opening / closing lid 11 opens and closes the front surface of the support base 8, and is provided with a vent hole 10 for discharging the discharge air from the temperature adjusting device 7 to the front side (under the driver's feet) in a wider range. Ventilation holes 10 for introducing air into the device 7 are also formed.
A sealing material 62 is provided on the inner surface of the opening / closing lid 11 so as to surround the ventilation hole 10 for discharging the hot air, and this sealing material 62 is used when the opening / closing lid 11 is closed. This is in contact with the periphery of the front opening 14B and the front surface of the temperature adjusting device 7 so that hot air discharged from the wind deflector 14 is not directly sucked into the temperature adjusting device 7.
[0018]
Reference numeral 63 denotes a locking tool for the opening / closing lid 11, and when the opening / closing lid 11 is closed, it is engaged with the connecting plate 54 by rotating to maintain the closed state of the opening / closing lid 11.
The connecting plate 54 is provided with a pivot shaft 65 on the front side through a bracket, and the front lower portion of the seat portion 6A of the driver's seat 6 is pivotally supported on the pivot shaft 65. The driver's seat 6 has a seat portion 6 </ b> A supported on the connecting plate 54, and the support base 8 also serves as a support for the driver's seat 6.
The driver's seat 6 has a backrest portion 6B that rises rearward and upward from the seat portion 6A, and the backrest portion 6B overlaps the engine 4 and the radiator 32 in the front-rear direction.
[0019]
The front side of the engine room 66 in which the engine 4 and the radiator 32 are disposed is partitioned by a front wall 67 so that the hot air that has cooled the engine 4 and the radiator 32 does not flow directly to the driver. .
The engine room 66 is designed to have a minimum volume by arranging the engine 4, the radiator 32, and other vehicle auxiliary devices, and is disposed as far as possible in front of the engine room 66. The lower part is located directly below the seat part 6A and is close to the temperature adjustment device 7 and the support base 8.
[0020]
The minimum space required for maneuvering and getting on and off is from the control stick 45 to the rear upper end of the backrest portion 6B in the front-rear direction, and the center in this case is substantially the front end of the seat 6A, and the control stick 45 is arranged from the front end of the seat 6A. If the distance to the front of the swivel base 2 is set to the minimum radius and the rear part of the swivel base 2 is formed with the minimum radius, the most compact swivel base 2 can be obtained.
Thus, it is extremely difficult to configure the front end of the seat portion 6A so as to be directly beside the turning center S of the swivel base 2 because of the size and arrangement structure of the engine 4, the temperature adjustment device 7, and the like. Although the front end of 6A must be in front of the turning center S, the swivel base 2 can be made as compact as possible by bringing the front end of the seat 6A as close as possible to the turning center S.
[0021]
That is, the seat portion 6A of the driver's seat 6 is disposed directly beside the turning center S so as to overlap the turning center S in the front-rear direction, the front-rear dimension of the support base 8 that supports the driver seat 6 is shortened, and the inside The longitudinal direction of the temperature adjusting device 7 arranged in the horizontal direction is shortened so that the front and rear dimensions thereof are shortened, whereby the front wall 67 is arranged as far forward as possible to approach the turning center S, and the engine room 66 is moved forward. By being able to form, the distance from the turning center S to the rear end of the turntable 2 is made as short as possible.
The driver's seat 6 is disposed close to the left side of the turning center S in the left-right direction, but the support base 8 overlaps with the turning center S even if they overlap.
[0022]
Left and right steering devices 12 and 13 for maneuvering the excavator 3 are arranged on the left and right sides of the driver's seat 6, and the left steering device 12 is rotated upward and retracted when the driver gets on and off. Can do.
As shown by a two-dot chain line in FIG. 4, the support base 8 is provided with a pivot mounting portion 69 for pivotally mounting the left steering device 12 and a mounting portion 70 for mounting the right steering device 13. Thus, the left and right steering devices 12 and 13 are firmly supported and the structure is simplified.
The temperature adjusting device 7 is mounted on the swivel base 2 by attaching the support stand 8 to the swivel base 2 in a state where the temperature control apparatus 7 is preliminarily incorporated in the support base 8. Any one or all of 12 and 13 can be assembled and attached to the swivel base 2.
[0023]
In addition, this invention is not limited to the said embodiment, A various deformation | transformation can be carried out. For example, the present invention can be applied not only to the rear small turning type backhoe, but also to a backhoe called an ultra small turning type or a standard type, and can also be applied to a type in which the cabin apparatus 20 is not mounted.
The temperature adjustment device 7 may be a cooler device. Instead of providing the support base 8, a bracket protrudes forward from the front wall 67 to support the driver's seat 6, and the temperature adjustment device 7 is disposed below the driver seat 6. Also good.
[0024]
Further, the support base 8 omits the tool insert portion 9, and the temperature adjusting device 7 is arranged so that the longitudinal side is in the left-right direction and the maximum area surface is in the front-rear direction, and the front wall 67 can be arranged further forward. Alternatively, the temperature adjustment device 7 may be mounted on the base plate 51 side.
[0025]
【The invention's effect】
According to the present invention described in detail above, the driver's seat 6 and the temperature adjusting device 7 below the turning center S are arranged in the vicinity of the turning center S in the left-right direction and overlapped with the turning center S in the left-right direction. Since the longitudinal side of 7 is directed substantially to the left and right, the temperature control device 7 occupies a small area in the front-rear direction, and the engine 4 and the like can be arranged as far as possible from the driver's seat 6 to the rear of the swivel base 2. A distance can be shortened and the rear part of the turntable 2 can be made compact.
[0026]
In addition, a support base 8 is disposed in the vicinity of the turning center S in the left-right direction so as to overlap the turning center S in the front-rear direction, and a driver's seat 6 is disposed on the support base 8. 7 and the longitudinal side of the temperature adjusting device 7 is directed substantially to the left and right, so that the temperature adjusting device 7 can be accommodated in the support base 8 of the driver's seat 6 and the engine 4 etc. can be arranged as far as possible in the front side. The distance from the driver's seat 6 to the rear part of the turntable 2 can be shortened, and the rear part of the turntable 2 can be made compact.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional side view of an essential part showing an embodiment of the present invention.
FIG. 2 is a perspective view showing the inside of the support base with the opening / closing lid opened.
FIG. 3 is a plan view showing an upper structure of a swivel base.
FIG. 4 is a front view of a temperature adjustment device and a support base.
FIG. 5 is a partial cross-sectional plan view of a temperature adjustment device and a support base.
FIG. 6 is a side view of the entire backhoe.
FIG. 7 is a plan view of the entire backhoe.
[Explanation of symbols]
2 swivel 3 excavator 4 engine 5 weight 6 driver's seat 7 temperature control device 8 support base 9 tool holder 10 vent hole 11 open / close lid 12 left steering device 13 right steering device

Claims (5)

The excavator is located at the front of the swivel and the engine is located at the rear. A support is placed on the swivel so as to overlap the swivel center in the front-rear direction and in the vicinity of the swivel center in the left-right direction. The driver's seat is arranged on the base, the temperature adjustment device is arranged below the inside, and the longitudinal side of this temperature adjustment device is directed substantially to the left and right ,
The support base has a left and right side plate fixed to the swivel base, a receiving member connected to the midway in the vertical direction of the left and right side plate, and a connection plate connected to the upper part of the left and right side plate,
A temperature adjusting device arrangement structure for a backhoe, wherein a temperature adjusting device having an air introduction port on the lower surface side is attached to the lower surface of the receiving member via a hanger . The said connection board is provided from the upper part of a right-and-left side board to the rear part of a receiving member, The pivot shaft which pivotally supports the front lower part of a driver's seat is provided in the front part of this connection board . Backhoe temperature control device arrangement structure. The said temperature control apparatus is a substantially rectangular parallelepiped, The largest area surface is facing up and down, The tool insertion part is formed in the upper side of the said receiving member, The Claim 1 or 2 characterized by the above-mentioned. Backhoe temperature control device arrangement structure. The support base is formed in a box shape, the front surface is closed with an opening / closing lid having a ventilation hole, and the air blown from the temperature adjusting device is turned forward to discharge from the ventilation hole of the opening / closing lid. The temperature adjusting device arrangement structure of the backhoe according to any one of claims 1 to 3, wherein a body is provided. The backhoe temperature control device arrangement structure according to any one of claims 1 to 4, wherein at least one of the left and right control devices is supported on the left and right side portions of the support base.

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